Lindcott Armory ReferenceGet the App
Jump toCartridge LibraryFactory LoadsPowder LibraryFirearm DatabaseBallistic Compare
ReferenceCartridge LibraryPowder LibraryFactory LoadsAmmo BrandsBullet CatalogBullet TypesBurn Rate ChartHeadstampsFirearm DatabaseDate Your GunToolsCartridge Family TreeBallistic CompareHead-to-HeadsAmmo Price HistoryField GuideOverviewHunting GuideMilitary TimelineGun HistoryBuying ChecklistStolen / Missing GunsAppsGet the App

Nammo · Extruded

20N29

Purpose-built for F-Class long-range competition.

Manufacturer
Vihtavuori
Grain shape
Extruded
Burn rank
#71
Category
Medium-Slow
Temp sensitivity
Low
Application
Rifle
Origin
Finland
Status
Active

Burn-rate position

FastestSlowest

Rank #71 on the burn-rate scale · Medium-Slow

Typical cartridges

.308 Winchester6.5 Creedmoor.284 Winchester

By cartridge

.308 Winchesteralso used: Shooters World Economy Rifle, Accurate 2230, A1
6.5 Creedmooralso used: IMR 3031, N550, Alliant Reloader 15
.284 Winchesteralso used: Reloader 17, Reloader 19, H4831

Similar burn rate

#70AR 2213SCADI#70Vihtavuori N160Vihtavuori#70IMR 4831IMR#70MRP2Norma#70RS70Reload Swiss

Supply & handling

Availability (US)
Limited
Shortage-prone
No
Suppressor-friendly
Yes
Flash-suppressed
No

About this powder

20N29 is a specialty powder from Vihtavuori's competition and military-grade lineup, sitting between N160 and N165. It sees use in large magnum precision rifle applications where the standard N-series powders don't quite fit the case capacity window needed.

ChartSee it on the burn-rate spectrumBrowseEvery powder, ranked by burn rate

Sources & provenance